Hackerearth

About Hackerearth

HackerEarth API V4 provides endpoints for compiling and running code submissions in multiple programming languages, aimed at developers who want to integrate code execution into their own applications. Access requires registering a web application to obtain a client-specific client-secret, which is passed in request headers for authentication, along with a cap on the number of clients per user and the number of free requests.

The API supports only asynchronous code evaluation requests, consolidating what was previously a two-call process in v3 into a single endpoint that handles both compilation and execution. After a request is submitted, a temporary response is returned while the code is queued for processing; clients can poll a getStatus endpoint or supply a callback URL to receive compilation and execution results without polling. A reconciliation endpoint is also provided to retrieve the status of any previous code-evaluation request.

Requests are made via POST with a JSON body specifying the language, source code, optional input, memory limit (up to 262144 KB), time limit (up to 5 seconds), an optional context string for passing client-side identifiers, and an optional callback URL. Responses include status codes such as REQUEST_INITIATED, REQUEST_QUEUED, CODE_COMPILED, REQUEST_COMPLETED, and REQUEST_FAILED, along with execution details like memory used, time used, exit code, and program output.

Key features

• Asynchronous code compilation and execution via API
• Supports multiple programming languages
• Callback URL notifications after compilation and execution
• getStatus reconciliation endpoint to check evaluation status of past requests
• Configurable memory limit (up to 256 MB) and time limit (up to 5 seconds) per submission
• Client authentication via unique client-secret header

Frequently asked questions